Music-leaf turner.



PATENTED JUNE 6, 1905.

F. P. PARKER.

MUSIC LEAF TURNER.

APPLICATION FILED SEPT. 19, 1904.

2 SHEETS-*SHEET 1.

'11 P. PARKER.

MUSIC LEAF TURNER.

APPLICATION FILED SBPT.19, 1904.

2SHEETSSHEET Qwoentoz .Efifi/l,

Patented June 6, 1905.

PATENT OFFICE.

FRANKLIN P. PARKER, OF CHICAGO, ILLINOIS.

MUSIC-LEAF TURNER.

SPECIFICATION forming part of Letters Patent No. 791,646, dated. June 6,1905.

Application filed September 19, 1904. Serial No. 225,060.

To ti/Z whom, it may concern:

Be it known that I, FRANKLIN P. PARKER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certainnew and useful Improvements in Music- Leaf Turners; andI do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to improvements in music-leaf turners.

The object of the invention is to provide a device whereby the leaves ofsheet-music may be automatically turned in either direction.

A further object is to provide a device of this character which will besimple, strong, and durable in construction, efficient and reliable inoperation, and well adapted to the purpose for which it is designed.

Vith these and other objects in view the invention consists of certainnovel features of construction, combination, and arrangement of parts,as will be hereinafter more fully described, and particularly pointedout in the appended claims.

In the accompanying drawings, Figure 1 is a front elevation of anautomatic music-leaf turner constructed in accordance with theinvention. Fig. 2 is a side elevation of the same, and Fig. 3 is acentral vertical longitudinal sectional view.

Referring more particularly to the drawings, 1 denotes a frame having atits upper and lower ends outwardly-projecting brackets 2, in which isrevolubly mounted a vertically-disposed shaft 3, on the upper and lowerportions of which are arranged sleeves 4 and 5. The ends of the shaft 3are adapted to project slightly beyond the outer ends of the sleeves 4and 5, and to said outer projecting ends of the shaft are fixed the endsof a music leaf-supporting frame 6, on which are ar ranged clips 7 forholding the sheet of music in place. To the outer ends of the sleeves 4and 5 are connected the ends of a second niusic-leaf-supporting frame 8,on which are arranged clips 9 for holding a sheet of music on thisframe.

In the frame 1 is mounted a horizontallydisposed shaft 10, on theforward end of which is loosely mounted a tooth disk or gear wheel 12,having formed on the edge of the same a series of notches 13. The teeth14 of the wheel 12 are formed on the front face of and project laterallyfrom the same.

On the shaft 3, immediately below the upper edge of the gear-wheel 12,is slidably mounted a short sleeve 15, on the upper end of which isfixed a spur gearpinion 16. In the sleeve 15 is formed a vertical slot17, through which projects a pin 18, said pin being secured to the shaft3. By this construction the sleeve 15 is adapted to have a limitedsliding movement on the shaft 3, thereby permitting the pinion 16 011the end of the same to be brought into engagement with the teeth of thegear-wheel 12.

On the sleeve 15 is formed an annular groove 19, with which is adaptedto be engaged the forked end of a shifting-lever 20. The lever 20 ispivotally mounted in the lower end of an arm 21, the upper end of whichis connected to the upper bracket 2 of the frame 1. To the outer end ofthe lever 20 is pivotally connected the upper end of a link or bar 22,the lower end of which is pivotally connected to avertically-disposedkeybar 23. The bar 23 is slidably mounted in the brackets 2 of theframe. On the lower end of the key-bar 23 is arranged a key 24, whichwhen depressedv will cause the link 22 to rock the shifting-lever 20,and thereby slide the gear-pinion 16 upwardly into engagement with theteeth 14 of the gearwheel 12.

On the lower end of the upper sleeve 4 is slidably mounted a shortsleeve 25, on the lower end of which is fixed a spur gear-pinion 26. Inthe sleeve 25 is formed a vertical slot 27 through which projects a pin28, said pin being secured to the sleeve 4. By this arrangement thesleeve 25 and gear-wheel 26 are adapted to have a limited slidingmovement on the lower end of the sleeve 4.

On the sleeve 25 is formed an annular groove 28, with which is adaptedto be engaged the forked end of a shifting arm or lever 29, the oppositeend of which is connected mounted a short sleeve 32, on the'lower end ofwhich is fixed a gear-pinion 33. In the sleeve 32 is formed-avertically-disposed slot 34, through which is adapted to project a pin35, said pin being secured to the shaft 3.

By this arrangement the sleeve 32 and the; gea'r'wheel '33 are adaptedto have a'limited sliding movement on the shaft 3[ 7 I On' the sleeve 32is formed an annular groove36, with whichis adapted to be engaged theforkedend of a shifting-arm or re; ver 37 the o posite end of which isconnected to a vertical y-disposed key-bar 38. On the lower end of thekey-bar 38is arranged a key 39 which when depressed will cause thekeybar 38 and 'thesh'iftingEarIn' 37 to slide the sleeve :32 and pinion33 downwardly, therebybringing' said pinion into engagement with theteethon the gear-wheel 12;

On the shaft '10, in the rear portion of the frame 1, is mounted acoil-spring 40, theinner end of which is connected to said shaft 10,;while the outer end 'of the sameis connected to'the'frame 1. On theshaft l0,'adj'acent to the rear side of thegear-wheel 12, is fixedlymounted'a ratchet-wheel 41, with which is adapted to befengaged a pawl42', which"is 'pivotally mounted upon the'rear'side of said gear-wheel12 whereby when 'saidratchetwheel 41 istu rned'in one directionthegearwheel 12 will be turned thereby through the medium of the pawl42. When the ratchetwhee141 :isturned in the opposite direction,

the pawl'42 will slide'loo'sely over the teeth of said ratehet-wheel,-'so that the wheel 12 will not be turned with said ratchet-wheel. end ofthe shaftlO is adapted to project beyo'n'd the'rear side of the frame 1and is square, as shown at 43, to form a winding-stem with which isadapted 'to be engaged a windingk'e'y, whereby said shaft '10' isrevolved and the s ring 40 wound up. In order to prevent the sprin 40from unwinding, a detent is provided to old the wheel 12" againstrotation, said detent being in the form of a plunger-bar 44. Theplunger-bar 44 is slidably' mounted in a guide bra'cket 45, arranged inthe lower end offthe frame 1.' N ear'the 'lower'end of the plunger bar44 is arranged a laterally}- projecting "pin orstud 46, and between saidpinorst'u'd and the lower bracket 2 is arranged a coil-spring 47. Thetension of said spring 47 is exerted to normally force the plunger rodor bar '44 upwardly into engagement wlth the edge of the wheel 12 and'into' one of the The notches 13, formed in said edge, thereby holdingthe'wheel 12 against movement by the spring 40.

On the key-bar 23 isfixed a laterallyproj ecting releasing-bar 48,having a forked inner end, whereby the same is engaged with theplunger-bar 44 immediately above a pin or -l1'1g'g-49', which projectslaterally from said plunger-bar, whereby upon the downward movement ofthe key-bar 23 when the key 24 is depressed the plunger-rod will bedisengaged from the gear-wheel 12 simultaneously with theengagement"ofthe -pinion 16 with the teeth 14 of said gear-wheel. The disengagementof the 'plunger-rod 44 permits the spring40 to unwind, thereby turningthegearwheel 12, which movement will be imparted :to the shaft 3 through'thepinion 16 to cause thesame to make a' half-revolution, therebymovingthe frame 6 and the music-leaf carried thereby to the left, thusturning the page of music. I r, l 4

on' the key-bar 30' is fi'xeda laterally-proj ecting releasing arm or'bar '50, having a forkedfouter end, whereby 'the same is en-' gaged withI the plunger-bar 44 immediately above the laterally-projecting pin 51,wherebyupon the downward movement of said ke'y-barb'y' the depression ofthe key 31 the plunger-bar 44 will be disengaged from the gear-wheel 12simultaneously with the engagement of the pinion 26 with the teeth 14 ofthe same, therebylpermitting the wheel 12 toturn said gear pinion 26 andthrough the same to turnthe slee've'4 and the music-leaf frame 8,fixedthereon, to" the left, thus moving or turning the second sheet ofthe music supported by the turning device.

On the key-b'ar'38 is 'fix'ed a laterally-projecting'releasing bar 52the outer forked'end of which is adapted to beengaged with theplunger-bar 44 immediately above a laterallyprojecting pin or stud 53.Thereby upon the downward movementofsaid key-bar 38 by the depression ofthe key 39 the plunger-bar will be disengaged from the gear-wheel-12simultaneously with the engagement of the pinion 33 with the teeth 14 onthe lower edge of said wheel, thus permitting the wheel 12 to turn saidpinion and the shaft '3, on which the same is mounted, to the right,causingthe frame 6' to turn the sheets of 'm'usicback again to theiroriginal position. The coilspring 47 on the plunger-rod will project thesame upwardly into I engagement with 'the wheel 12' as soon as'thekey-bars are released, said upward movement of the plunger-rodalso'raisingthe key bar, and thus disengaging the -pinions from theteeth ofthe gear-wheel 12, which will stop the movement of the shaft 3orsleeve 4 andthe'music-supp'orting frames carried thereby. The notches13 in the edge of the'gear-wh'eel 12' and the teeth 14, formed on thefront face of the same, are so arranged with respect to the 'pinion'sonthe shaft 3 and sleeve 4 that said shaft and sleeve will make but ahalf-revolution when said gear-wheel is released by the plunger 44.

On the frames 6 and 8 may be arranged, if desired, a backing ofpasteboard or other suitable material. (Not shown.) The inner edges ofsaid backing are hingedly connected at their upper ends to the shaft 3by means of hinges 54 and at their lower ends to the sleeve 5 by meansof hinges 55.

The frame 1 may be attached to a musical instrument or supported in anysuitable manner within convenient reach of the musician.

By the use of a music-leaf turner such as herein shown and described itis simply necessary for the musician to depress one or the other of thekeys in order to turn the leaves of the music, thereby enabling him tokeep his hands upon. the instrument which he may be playing except forthe moment of time required to depress one of said keys.

From the foregoing description, taken in connection with theaccompanying drawings,

the construction and operation of the invention will be readilyunderstood without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a music-leaf turner, the combination with a supporting-frame, of ashaft revolubly mounted in the same, upper and lower sleeves mounted onsaid shaft, music-leaf-supporting frames fixed on said shaft andsleeves, a gear-wheel mounted in said frame, means whereby said wheel isdriven, means for holding the same against rotation, pinions slidablymounted on said shaft and sleeves, and means whereby said pinions arebrought into engagement with the teeth on said gearwheel, by which thesame and said shaft and sleeves are turned, motion being therebyimparted to said music-leaf frames, substan tially as described.

2. In a music-leaf turner, the combination with a supporting-frame, of ashaft revolubly mounted in-the same, upper and lower sleeves mounted onsaid shaft, music-leafsupporting frames fixed on said shaft and sleeves,a spring-actuated gear-wheel mounted in said frame, a detent adapted tohold said wheel against rotation, pinions slidably mounted on said shaftand upper sleeve, and means whereby said pinions are brought intoengagement with said gear-wheel, substantially as described.

3. In a music-leaf turner, the combination with a supporting-frame, of ashaft revolubly mounted in the same, upper and lower sleeves mounted onsaid shaft, music-leafsupporting frames fixed on said shaft and sleeves,a spring-actuated gear-wheel mounted in said frame, a spring-projecteddetent adapted to normally hold said wheel against rotation, pinionsslidably mounted on said shaft and upper sleeve, means whereby the sameare brought into engagement with said gear-wheel, and means whereby saiddetent is retracted and disengaged from said gearwheel simultaneouslywith the engagement of any of said pinions with the same, substantiallyas described.

4. In a music-leaf turner, the combination with a supporting-frame, of ashaft revolubly mounted in the same, upper and lower sleeves mounted onsaid shaft, 1nusicleaf supporting frames fixed on said shaft andsleeves, a spring-actuated gear-wheel having formed on its outer edgespaced notches, a spring-projected detent adapted to engage said notchesand normally hold said wheel against rotation, pinions having a limitedsliding engagement with said shaft and upper sleeve, key-bars mounted insaid frame, means whereby said key-bars are loosely connected to saidpinions and said detent, and means for actuating said key-bars to engage said pinions with said gear-wheel and simultaneously disengage saiddetent from the same, substantially as described.

5. Ina music-leaf turner, the combination with a supporting-frame, of ashaft revolubly mounted in the same, upper and lower sleeves mounted insaid shaft, music-leafsupporting frames fixed on said shaft and sleeves,a spring-actuated gear-wheel mounted in said frame, a spring-projecteddetent adapted to engage said wheel and normally hold the same againstrotation, pinions slidably mounted on said shaft and upper sleeveadjacent to the teeth on the upper edge of said gear-wheel, meanswhereby said pinions may be brought into engagement with said teeththereby turning said music-leaf frames in one direction upon the releaseof said gearwheel, a pinion slidably mounted on said shaft adjacent tothe teeth on the lower side of said gear-wheel, means whereby saidpinion is engaged with the teeth on said lower side of the wheel to turnsaid music-leaf frames in the reverse direction, and means whereby saiddetent is disengaged from said wheel simultaneously with the engagementof any of said pinions with the same, substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

FRANKLIN P. PARKER. WVitnesses:

IV. S. I'IEOTOR, T. F. WVALKER.

